C# 如何窗体去掉上面的最大化，最小化合关闭以及实现无边框窗体拖动

最近在研究winform，查了一些资料以及论坛，总结一些吧

1.C# 如何窗体去掉上面的最大化，最小化合关闭

主窗口中弹出子窗口，但子窗口不想要最大化，最小化合关闭的那一条，如图

要去掉的标题栏

解决方法：

FormBorderStyle选择none

代码修改为

 form2.FormBorderStyle = FormBorderStyle.None;

2.C#怎样实现无边框窗体拖动

#region 无边框窗体拖动
        //-------------------无边框窗体拖动---------------------------
        Point mouseOff;//鼠标移动位置变量
        bool leftFlag;//标签是否为左键
        private void Form_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                mouseOff = new Point(-e.X, -e.Y); //得到变量的值
                leftFlag = true;                  //点击左键按下时标注为true;
            }
        }
        private void Form_MouseMove(object sender, MouseEventArgs e)
        {
            if (leftFlag)
            {
                Point mouseSet = Control.MousePosition;
                mouseSet.Offset(mouseOff.X, mouseOff.Y);  //设置移动后的位置
                (((System.Windows.Forms.PictureBox)sender).Parent).Location = mouseSet;
            }
        }
        private void Form_MouseUp(object sender, MouseEventArgs e)
        {
            if (leftFlag)
            {
                leftFlag = false;//释放鼠标后标注为false;
            }
        }

        [DllImport("user32.dll")]
        public static extern bool ReleaseCapture();
        [DllImport("user32.dll")]
        public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);
        public const int WM_SYSCOMMAND = 0x0112;
        public const int SC_MOVE = 0xF010;
        public const int HTCAPTION = 0x0002;

        private void Form1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
        {
            ReleaseCapture();
            SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);
        }
        //------------------------end 无边框窗体拖动-----------------------------------
        #endregion

同时，加入相应的触发事件

pictureBox.MouseDown += new System.Windows.Forms.MouseEventHandler(Form_MouseDown);
pictureBox.MouseMove += new System.Windows.Forms.MouseEventHandler(Form_MouseMove);
pictureBox.MouseUp += new System.Windows.Forms.MouseEventHandler(Form_MouseUp);

最终效果图如下

参考：http://bbs.csdn.net/topics/320157403

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